Refrigerating apparatus



Aug. 18, 1931. R. E. OTTENHEIMER REFRIGERATING APPARATUS Filed Dec. 19, 1927 I5 Sheets-Sheet l Aug. 18,1931. R. E. OTTENHEIMER REFRIGERATING APPARATUS Filed Dec. 19, 1927 3 Sheets-Sheet 2 gwuwnto'o 5%05154 27 drum/$ 54452 QM m 1931- R. E OTTENHEIMER 1,819,569

REFRIGERATING APPARATUS Filed Dec. 19, 1927 3 Sheets-Sheet 5 l mented Aug. 18, 1931 REUBEN E. OTTENHEIMER, OF BALTIMORE, MARYLAE'D REFRIGERATIN G APPARATUS Application filed December 19, 1927. Serial No. 241,102.

In an application, Serial No. 241,101 filed simultaneously herewith, I have discloseda refrigerating mechanism including a tank or form of substantially triangular cross-sec- 6 tion, that is, of a form in which the walls are downwardly divergent, radiating fins on the sides of the tank, and refrigerating coils associated with or attached to the tank. The present invention relates to the arrangement and form of the coils and the fins whereby a high degree of eificiency is attained, and consists in certain novel features which are illustrated in the annexed drawings and will be hereinafter first fully described and then more particularly defined in the appended claims.

In thedrawings Figs. 1 and 2 are end elevations showing different embodiments of the present inven- 1 tion;

Fig. 3 is a transverse vertical section of another form of mechanism;

Fig. 4 is a detail horizontal section of an arrangement similar to that shown in Fig. 1;

Fig. 5 is a detail horizontal section of a part of the structure shown in Fig. 2;

Fig. 6 is aview similar to Fig. 5 with the inner coil omitted; Fig. 7 is a transverse section of another form of mechanism;

Fig. 8 is a side elevation of the mechanism shown in Fig. 7;

Fig. 9 is a diagrammatic showing of a slight modification;

3 Fig. 10 is a view showing one use to which the present invention may be applied;

Fig. 11 is a detail showing one method of attachment for the fins, in which fin sections are detachably mounted upon other sections attached to a form;

Fig. 12 is a detail of a modification in which a different type of fin is shown detachably mounted upon a tank or form.

It will be appreciated that this invention is equally applicable to a tank in which brine or ice or other suitable refrigerant may be contained or to an open ended form and it is to be distinctly understood that in so far as W the present invention is concerned that a tank or form or in fact any suitable refrigerating mechanisms are regarded as equivalent.

The tank or form 1 shown in Fig. 1 is of the same general form disclosed in my aboveidentified application having its side walls diverging along the line of flow of circulating air such direction usually being downwardly. Upon the side walls of thetankare fins 12 having their outer edge portions curved inwardly toward the tank in their upper parts, 0 flanges or wings 3 extending from top to bottom of said edge portions so as to define with the tank, flues through which the surrounding air may flow. The refrigerating coil 4 is shown in Fig. 1, as encircling the tank transversely and having its turns contracted in its upper portion to conform to the tank and the contour of the fins, the turns of the coil, in this arrangement, being housed in the respective fins, as shown in Fig. 4. The provision of the fins increases the radiating surface of the tank and minimizes the accumulation of frost on the tank, and by arranging the coils in proximity to the fins the accumulation of frost on the coils is reduced thereby increasing the refrigerating efliciency. The tank may contain a brine solution or any suitable equivalent thereof, or may contain inner coils or both coils and a solution. In Fig. 4 inner coils 5 are indicated extending longitudinally through the tank, although obviously any coil arrangement may be provided.

In Fig. 2,-the form 1 is the same as in Fig. 1, but the coils have an inner series of turns 6 passing through the flues defined by the fins, and an outer series of turns 7 passing outside of the fins, the arrangement being perhaps, best shown in Fig. 5. In Fig. 3 the tank 8 is ofthe same form as the tank shown in Figs. 1 and 2, but the fins 9 are flat plates of inverted right triangular outline, and the outer coil 10 is the same as the coil 4 but has members 11 passing back and forth within the tank.

Fig. 6 shows a portion of a form 12 having fins 13, and a coil 14 disposed entirely outside of the fins. In Figs. 7 and 8, the side walls 15 of the tank 16 are each in one plane from top to bottom, and the fins 17 are of inverted right triangular outline. In this form of the I be obtained.

invention, the tank or form is shown with openings 18 through its top and bottom,

I whereby air may flow through the form, and

the coil 19 is disposed in three series extending longitudinally through the tank, vertical partitions 20 being provided between the adjacent series. It will also be noted that the coils are shown as of the hairpin type, the

successive bends or turns running back and forth in the same longitudinal plane. k

The coils are shown in the drawings in close proximity to the fins, and the form, and supported by any suitable means, but 'it will be obvious that the coils may be soldered or otherwise attached if desired.

In the form of device shown diagrammatically in Fig. 9, the coils 21 are arranged in generally triangular configuration'in crosssection and are enclosed by an open-ended form 22; the fins 23 are arranged horizontally of the form rather than vertically, as shown in Fig. 7 but it will be evident that with horizontal fins sloping, or of general herring bone shape illustrated, that the desired results will It will be obvious, of course, that these fins may be attached permanently as by $01- dering, brazing and the like, or they ma be removably attached by means of a key ole slot and pin, or a bayonet joint, or any other convenient means for effecting a detachable combination, or as hereinafter described. One advantage of having the fins removably attached would be to facilitate the wrapping of the coil about the form, and the latter attachment of the fins in close proximity one to another when an angular fin of the type disclosed in Fig. 4.- is used.

In Figs. 10 and 12, the application of this invention to a refri erator of the show case type is disclosed. t will'be noted that the form or tank 24 is provided with vertical fins 25, detachably secured thereto having horizontally extending portions 26 protruding from the lower portion of the form to a point ap roximately midway of the food shelf 27.

ig. 11 illustrates such a method of attachment as is referred to above.

These fins may be attached by means of a bayonet joint 28, as shown in Fi 12, or the portions extending below the shel may be attached directly to the vertical fins as illustrated in Fig. 11. In this view it will be noted that the portions 26a are attached by means of a bayonet joint 28a, the fins 25a which in this instance are illustrated as extending horizontally of the form 24a, rather than longitudinally. The fins 25a, 26a and 29 may be detachably mounted on the form by any suitable means 286, or may be fixed thereto as by brazing, soldering or the like.

It will be obvious, of course, that the fins 26a, may be attached to the fins 25a by a joint located anywhere along the wail of the tin rather than at the outer portion of the fin by the joint 28a, such variation being shown by the joint 280, in fact the fin 25a itself may be formed of two sections as shown in Fig. 11.

It will be obvious from an inspectron f Fig. 11 and from the foregoing descrlption that various combinations of fins are contemplated, the particular arrangement being dependent upon conditions. For example, a series of roups of fins mounted on the form in paralle relation might be used, in which the fins of one group project beyond the fins of another group. In such an arrangement if it is'de'sired to have all the fine pro ect the same distance from the form, the shorter fins might be built up by the addition of fin ortions connected to the portions mounte on the form. A series of'fin portions might be mounted on the form and only certain of them built up b the addition of attached portions to extend heyond the remaining'form attached fin portions.

It will be seen then that this invention covers a brine. tank or form or suitable equiva-- lent. structure having generally diverging sides and fins attached regardless of whether refrigerating coils are used or not. i That is to say the preferred form of the invention is a generally triangular shaped tank or form havin converging fins attached thereto so that t e whole apparatus will fit inside a rectangular shaped cooling channel without blocking off the air circulation. In fact this arrangement will accelerate the air circula-' tion and in addition the fins will function to whether of the expansion type or any other desired type and I do not intend to be limited other than as defined in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is

1. A refrigerating apparatus including a tank, an ular fins thereon, and a coil having ns%isp'osed within the angles of the fins.

j: refrigerating,apparatus'including a form having downwardly diverging sides, fins thereon, and a coil around the form having itsturns contracted in their upper portions, whereby to produce turns of generally trapezoidal configuration.

3. A refrigerating'apparatus including a form having downwardly diverging sides, fins thereon, and a 'coil associated with the form, said coil being of generally triangular configuration in cross section.

4. A refrigeratingapparatus including a like associated therewith, means on said tank to assist movements of air currents past said tank and coil, said means being so arranged with respect to said coil as to minimize frost accumulations thereon.

6. A refrigerating mechanism comprising a form having generally diverging sides and sets of fins thereon.

7. A refrigerating apparatus comprising a tank of generally triangular configuration in section and sets of fins thereon.

8. A refrigerating apparatus including a form, and a coil encircling the form and a coil extending back and forth within the form.

9. A refrigerating apparatus including a 'tank of generally triangular cross section,

and a coil arranged in a plurality of series within the tank with the turns of each series in one longitudinal plane.

10. A refrigerating apparatus including a tank having downwardly diverging walls, sets of fins on said tank, the fins of one of said sets extending beyond the fins of the other set.

11. In a refrigerator having a shelf, the combination with a refrigerating apparatus including a form havin downwardly diverging sides, fins on the form mounted contiguously thereto and adjacent said shelf, and a coil associated with said form in proximity to the fins, and certain of said fins extending beneath said shelf.

12. In a refrigerator having a shelf, the combination with a refrigerating apparatus including a form having downwardly diverging sides, fins on the form and associated with said shelf, and a coil associated with said form in proximity to the fins.

13. A refrigerating apparatus including a form, fins detachably mounted thereon, and a coil having its turns disposed between said fins.

14. A refrigerating apparatus including a form, angular fins detachably mounted thereon, and a coil having its turns disposed within the angles of the fins.

15. A refrigerating apparatus including a form having fins detachably mounted there along, and a refrigerating coil associated with said form in proximity to the fins, and other fins detachably mounted on said form and arranged to project therefrom beyond the edges of said first mentioned fins.

16. In a refrigerator having a shelf, the combination with a refrigerating apparatus comprising a form located adjacent an edge of the shelf, and a coil therearound, and means on said form mounted contiguously thereto and disposed adjacent said coil to minimize frost accumulations on the coil and form, and means extending from said form beneath said shelf to facilitate cooling thereof.

17. A refrigerating apparatus including a tank having sets of fins detachably mounted thereon, the fins of one of said sets extending beyond the fins of the other set.

18. A refrigerating apparatus including a tank, fins on said tank, and other fins mounted on said first named fins.

19. A refrigerating apparatus including a tank, having downwardly diverging walls, sets of fins on said tank, the fins of one of said sets being mounted on the fins of the othedrs of said sets and extending therebeyon 20. A refrigerating apparatus including a form, fins thereon, other fins mounted on said first fins and a refrigerating coil in proximity to the fins.

21. A refrigerating apparatus including a tank, detachable fins on said tanks, and

other detachable fins mounted on said firstnamed fins.

22. A refrigerating apparatus including a tank, having downwardly diverging walls, fins detachably mounted on said tank, and other fins detachably mounted on the first fins and extending therebeyond.

23. A refrigerating apparatus including a form, detachable fins thereon, other fins detachably mounted on said first fins and a refrigerating coil in proximity to the fins.

24. A refrigerating apparatus including a form having sets of fins thereon, the fins of one of said sets being mounted on the respective fins of the other of said sets and extending therebeyond.

25. A refrigerating apparatusincluding a tank having downwardly diverging walls and sets of fins on said tanks, the fins of one of said sets being mounted on the respective fins of the other of said sets and extending therebeyond.

26. A refrigerating apparatus including a form having fins detachably mounted therealong and a refrigerating coil associated with said form in proximity to the fins and other fins detachably mounted on said fins to project therefrom beyond the edges of said first mentioned fins.

27. A refrigerating apparatus including a tank having the sets of fins detachably mounted thereon, the fins of one of said sets being mounted on the respective fins of the other of said sets and extending therebeyond.

In testimony whereof I hereunto afiix my signature.

REUBEN E. OTTENHEIMER. 

